Bellingham-based grocery store chain Haggen announced plans Friday to embark on a major expansion that will take the store from 18 locations to 164 across Washington, Oregon, California, Nevada and Arizona. Haggen is set to acquire the additional 146 stores as part of an Federal Trade Commission-mandated divestment when Albertsons and Safeway merge. The FTC needs to approve Haggen's acquisition. Haggen will take over three stores in the Phoenix area and 10 throughout the state. Haggen's locally…